The patent's assignee for patent application serial number 680431 is
News editors obtained the following quote from the background information supplied by the inventors: "The invention relates to a method for monitoring a transmitter. The transmitter comprises at least one measurement unit and one transmission unit. The measurement unit and the transmission unit are interconnected at least for transmission of signals. Furthermore, there is at least one connecting line for supplying power to the measurement unit which is used to determine at least one measurement quantity and to produce a measurement signal which is dependent on it. The transmission unit receives the measurement signal from the measurement unit and is used to transfer an output signal to at least one signal transmission element, based on the measurement signal. The invention also relates to a corresponding transmitter.
"Transmitters--alternative names are transducers or field devices--of the aforementioned type have been known for a long time and are used quite generally to detect the primary sensor signal which originates from a sensor unit or a sensor element and to convert it into a generally standardized signal as an electrical output signal, so that it can be used for example, by a higher-level process monitoring unit or control unit. The term transmitter should not be understood as limiting in any way. The sensor unit can be used especially for measurement of physical or chemical measurement quantities, for example, flow rate, mass flow rate, pressure, temperature, fill level, pH value, etc.
"This transmitter can be divided at least into two parts for the general examination: into a measurement unit which is used for the measurement in itself and which makes available a measurement signal which originates from the measurement, and into a transmission unit which receives the measurement signal and transfers it for example, via a field bus to a higher-level unit. One part of the transmitter performs the task of actual measurement and the other part of the transmitter communicates the measurement value which has been obtained in the measurement or optionally the acquired measurement values to other units.
"Transmission takes place via any signal transmission element which is, for example, an interface of a field bus or a two-wire connection site or any type of a field bus itself or any communications element or line element for a 4 . . . 20 mA signal, for example. In one example, it is an electrical conductor. It can also be, for example, a wireless radio link.
"Depending on the application, transmitters must satisfy different safety requirements. Thus, in particular, possible error sources must be recognized, and optionally, there must be safety measures. For errors, critical regions are, for example, the measurement itself, the signal processing or data processing in the transmitter and also the communication with for example, the units which are at a higher level than the transmitter. In order to satisfy the respective safety requirements, for example, the SIL (Safety Integrity Level) standard which is important especially in process automation, there must be, for example, redundancy or diversity for the transmitters. Redundancy here means a doubled or multiple layouts of safety-relevant components. Diversity means that the hardware components or software programs which are used originate from different manufacturers or are of different type. Both redundant and also diverse configurations are generally complex and/or costly.
Most Popular Stories
- NSA Defends Global Cellphone Tracking Legality
- Top Websites for U.S. Hispanics
- Networks Vie for U.S. Hispanic TV Viewers
- Ad Counts Rise in 2013 for Hispanic Magazines
- Apple Wants Samsung to Pay $22M for Patent Dispute Legal Bills
- Starbucks Gets Grinchy; No Gingerbread Lattes for Tampa Customers
- Saab Gets Back into the Game; U.S. Auto Sales Soar
- Jobs Report Brings Cheer As Unemployment Drops to Five-year Low
- Apple Paid Its Lawyers More Than $60MM to Defeat Samsung in Court
- US Consumer Borrowing Rose $18.2B in Oct.